remove main_render_frame(), use GetMainRenderFrame() instead

CL 93333002 added a main_render_frame() method to RenderFrameImpl,
then about a week later CL 107893003 added a virtual
GetMainRenderFrame() method with the same implementation.
To avoid confusion, we could just use the latter and remove
main_render_frame().

BUG=304341

Review URL: https://codereview.chromium.org/554743009

Cr-Commit-Position: refs/heads/master@{#294562}
diff --git a/content/public/test/render_view_test.cc b/content/public/test/render_view_test.cc
index dc1ed10..1399a0f 100644
--- a/content/public/test/render_view_test.cc
+++ b/content/public/test/render_view_test.cc
@@ -340,8 +340,8 @@
   params.url = url;
   params.navigation_type = FrameMsg_Navigate_Type::RELOAD;
   RenderViewImpl* impl = static_cast<RenderViewImpl*>(view_);
-  impl->main_render_frame()->OnNavigate(params);
-  FrameLoadWaiter(impl->main_render_frame()).Wait();
+  impl->GetMainRenderFrame()->OnNavigate(params);
+  FrameLoadWaiter(impl->GetMainRenderFrame()).Wait();
 }
 
 uint32 RenderViewTest::GetNavigationIPCType() {
@@ -372,7 +372,7 @@
   RenderViewImpl* impl = static_cast<RenderViewImpl*>(view_);
   blink::WebHistoryItem item;
   item.initialize();
-  impl->main_render_frame()->didNavigateWithinPage(
+  impl->GetMainRenderFrame()->didNavigateWithinPage(
       frame,
       item,
       is_new_navigation ? blink::WebStandardCommit
@@ -419,9 +419,9 @@
   navigate_params.page_state = state;
   navigate_params.request_time = base::Time::Now();
 
-  FrameMsg_Navigate navigate_message(impl->main_render_frame()->GetRoutingID(),
+  FrameMsg_Navigate navigate_message(impl->GetMainRenderFrame()->GetRoutingID(),
                                      navigate_params);
-  impl->main_render_frame()->OnMessageReceived(navigate_message);
+  impl->GetMainRenderFrame()->OnMessageReceived(navigate_message);
 
   // The load actually happens asynchronously, so we pump messages to process
   // the pending continuation.
diff --git a/content/renderer/accessibility/renderer_accessibility_browsertest.cc b/content/renderer/accessibility/renderer_accessibility_browsertest.cc
index 6bb5c79..45b91304 100644
--- a/content/renderer/accessibility/renderer_accessibility_browsertest.cc
+++ b/content/renderer/accessibility/renderer_accessibility_browsertest.cc
@@ -324,7 +324,7 @@
   accessibility->HandleAXEvent(
       root_obj,
       ui::AX_EVENT_VALUE_CHANGED);
-  view()->main_render_frame()->OnSwapOut(kProxyRoutingId);
+  view()->GetMainRenderFrame()->OnSwapOut(kProxyRoutingId);
   accessibility->SendPendingAccessibilityEvents();
   EXPECT_FALSE(sink_->GetUniqueMessageMatching(
       AccessibilityHostMsg_Events::ID));
diff --git a/content/renderer/external_popup_menu_browsertest.cc b/content/renderer/external_popup_menu_browsertest.cc
index 1152435..e58d764 100644
--- a/content/renderer/external_popup_menu_browsertest.cc
+++ b/content/renderer/external_popup_menu_browsertest.cc
@@ -30,7 +30,7 @@
   }
 
   RenderFrameImpl* frame() {
-    return view()->main_render_frame();
+    return view()->GetMainRenderFrame();
   }
 
   virtual void SetUp() {
diff --git a/content/renderer/history_controller.cc b/content/renderer/history_controller.cc
index 05b46df..d6f1abd 100644
--- a/content/renderer/history_controller.cc
+++ b/content/renderer/history_controller.cc
@@ -60,7 +60,7 @@
 
   provisional_entry_ = target_entry.Pass();
 
-  WebFrame* main_frame = render_view_->main_render_frame()->GetWebFrame();
+  WebFrame* main_frame = render_view_->GetMainRenderFrame()->GetWebFrame();
   if (current_entry_) {
     RecursiveGoToEntry(
         main_frame, same_document_loads, different_document_loads);
diff --git a/content/renderer/history_entry.cc b/content/renderer/history_entry.cc
index ef4b768..d1425165 100644
--- a/content/renderer/history_entry.cc
+++ b/content/renderer/history_entry.cc
@@ -189,7 +189,7 @@
                              new_item,
                              clone_children_of_target,
                              target_frame,
-                             render_view->main_render_frame()));
+                             render_view->GetMainRenderFrame()));
   return new_entry;
 }
 
diff --git a/content/renderer/npapi/webplugin_delegate_proxy.cc b/content/renderer/npapi/webplugin_delegate_proxy.cc
index 76d764d4..0262e39 100644
--- a/content/renderer/npapi/webplugin_delegate_proxy.cc
+++ b/content/renderer/npapi/webplugin_delegate_proxy.cc
@@ -313,7 +313,7 @@
       // shouldn't happen, since if we got here the plugin should exist) or the
       // plugin crashed on initialization.
       if (!info_.path.empty()) {
-        render_view_->main_render_frame()->PluginCrashed(
+        render_view_->GetMainRenderFrame()->PluginCrashed(
             info_.path, base::kNullProcessId);
         LOG(ERROR) << "Plug-in crashed on start";
 
@@ -487,7 +487,7 @@
     plugin_->Invalidate();
   }
   if (channel_host_.get() && !channel_host_->expecting_shutdown()) {
-    render_view_->main_render_frame()->PluginCrashed(
+    render_view_->GetMainRenderFrame()->PluginCrashed(
         info_.path, channel_host_->peer_pid());
   }
 
diff --git a/content/renderer/render_view_browsertest.cc b/content/renderer/render_view_browsertest.cc
index b79d8d72..e3ed9fa 100644
--- a/content/renderer/render_view_browsertest.cc
+++ b/content/renderer/render_view_browsertest.cc
@@ -502,7 +502,7 @@
   RenderProcess::current()->AddRefProcess();
 
   // Respond to a swap out request.
-  view()->main_render_frame()->OnSwapOut(kProxyRoutingId);
+  view()->GetMainRenderFrame()->OnSwapOut(kProxyRoutingId);
 
   // Ensure the swap out commits synchronously.
   EXPECT_NE(initial_page_id, view_page_id());
@@ -515,7 +515,7 @@
   // It is possible to get another swap out request.  Ensure that we send
   // an ACK, even if we don't have to do anything else.
   render_thread_->sink().ClearMessages();
-  view()->main_render_frame()->OnSwapOut(kProxyRoutingId);
+  view()->GetMainRenderFrame()->OnSwapOut(kProxyRoutingId);
   const IPC::Message* msg2 = render_thread_->sink().GetUniqueMessageMatching(
       FrameHostMsg_SwapOut_ACK::ID);
   ASSERT_TRUE(msg2);
@@ -573,7 +573,7 @@
   ProcessPendingMessages();
 
   // Respond to a swap out request.
-  view()->main_render_frame()->OnSwapOut(kProxyRoutingId);
+  view()->GetMainRenderFrame()->OnSwapOut(kProxyRoutingId);
 
   // Check for a OnSwapOutACK.
   const IPC::Message* msg = render_thread_->sink().GetUniqueMessageMatching(
@@ -1557,7 +1557,7 @@
   frame()->OnNavigate(params);
 
   // An error occurred.
-  view()->main_render_frame()->didFailProvisionalLoad(web_frame, error);
+  view()->GetMainRenderFrame()->didFailProvisionalLoad(web_frame, error);
   // Frame should exit view-source mode.
   EXPECT_FALSE(web_frame->isViewSourceModeEnabled());
 }
@@ -1580,7 +1580,7 @@
   frame()->OnNavigate(params);
 
   // A cancellation occurred.
-  view()->main_render_frame()->didFailProvisionalLoad(web_frame, error);
+  view()->GetMainRenderFrame()->didFailProvisionalLoad(web_frame, error);
   // Frame should stay in view-source mode.
   EXPECT_TRUE(web_frame->isViewSourceModeEnabled());
 }
@@ -2166,7 +2166,7 @@
   frame()->OnNavigate(params);
 
   // An error occurred.
-  view()->main_render_frame()->didFailProvisionalLoad(web_frame, error);
+  view()->GetMainRenderFrame()->didFailProvisionalLoad(web_frame, error);
   const int kMaxOutputCharacters = 22;
   EXPECT_EQ("",
             base::UTF16ToASCII(web_frame->contentAsText(kMaxOutputCharacters)));
@@ -2196,7 +2196,7 @@
   frame()->OnNavigate(params);
 
   // An error occurred.
-  view()->main_render_frame()->didFailProvisionalLoad(web_frame, error);
+  view()->GetMainRenderFrame()->didFailProvisionalLoad(web_frame, error);
   // The error page itself is loaded asynchronously.
   FrameLoadWaiter(frame()).Wait();
   const int kMaxOutputCharacters = 22;
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index f0865b0d..59c5664f 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -1966,7 +1966,7 @@
   FOR_EACH_OBSERVER(RenderViewObserver, observers_, FocusedNodeChanged(node));
 
   // TODO(dmazzoni): this should be part of RenderFrameObserver.
-  main_render_frame()->FocusedNodeChanged(node);
+  GetMainRenderFrame()->FocusedNodeChanged(node);
 }
 
 void RenderViewImpl::didUpdateLayout() {
@@ -2463,7 +2463,7 @@
   return RenderWidget::Send(message);
 }
 
-RenderFrame* RenderViewImpl::GetMainRenderFrame() {
+RenderFrameImpl* RenderViewImpl::GetMainRenderFrame() {
   return main_render_frame_.get();
 }
 
@@ -4038,7 +4038,7 @@
   // Never show a disambiguation popup when accessibility is enabled,
   // as this interferes with "touch exploration".
   AccessibilityMode accessibility_mode =
-      main_render_frame()->accessibility_mode();
+      GetMainRenderFrame()->accessibility_mode();
   bool matches_accessibility_mode_complete =
       (accessibility_mode & AccessibilityModeComplete) ==
           AccessibilityModeComplete;
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index 6727118..eda3369 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -212,8 +212,6 @@
     send_content_state_immediately_ = value;
   }
 
-  RenderFrameImpl* main_render_frame() { return main_render_frame_.get(); }
-
   MouseLockDispatcher* mouse_lock_dispatcher() {
     return mouse_lock_dispatcher_;
   }
@@ -463,7 +461,7 @@
   // RenderView implementation -------------------------------------------------
 
   virtual bool Send(IPC::Message* message) OVERRIDE;
-  virtual RenderFrame* GetMainRenderFrame() OVERRIDE;
+  virtual RenderFrameImpl* GetMainRenderFrame() OVERRIDE;
   virtual int GetRoutingID() const OVERRIDE;
   virtual gfx::Size GetSize() const OVERRIDE;
   virtual WebPreferences& GetWebkitPreferences() OVERRIDE;