Rename WebContents::GetCapturerCount() to IsBeingCaptured().

Callers don't need to know the number of capturers.

This change is a prerequisite to expose IsBeingCaptured() on
RenderWidgetHostDelegate, to let RenderWidgetHostViews
determine by themselves whether they need to render
content.

Bug: 788827
Change-Id: If1f7d6b51901bf845d3ec3c8bb93a16f48fefaf1
Reviewed-on: https://chromium-review.googlesource.com/796932
Commit-Queue: François Doray <[email protected]>
Reviewed-by: Jochen Eisinger <[email protected]>
Cr-Commit-Position: refs/heads/master@{#523120}
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index f66256f..fba08e3 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -339,7 +339,7 @@
   const std::string& GetEncoding() const override;
   void IncrementCapturerCount(const gfx::Size& capture_size) override;
   void DecrementCapturerCount() override;
-  int GetCapturerCount() const override;
+  bool IsBeingCaptured() const override;
   bool IsAudioMuted() const override;
   void SetAudioMuted(bool mute) override;
   bool IsCurrentlyAudible() override;