[IME API] Adds input.ime.hideInputView API.

BUG=316524
TEST=Locally verified on sandbox.

Review URL: https://codereview.chromium.org/108723004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241566 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/extension_function_histogram_value.h b/chrome/browser/extensions/extension_function_histogram_value.h
index 66498a3..6693c82f 100644
--- a/chrome/browser/extensions/extension_function_histogram_value.h
+++ b/chrome/browser/extensions/extension_function_histogram_value.h
@@ -712,6 +712,7 @@
   INPUT_IME_SENDKEYEVENTS,
   VIRTUALKEYBOARDPRIVATE_LOCKKEYBOARD,
   SCREENLOCKPRIVATE_SHOWBUTTON,
+  INPUT_IME_HIDEINPUTVIEW,
   ENUM_BOUNDARY // Last entry: Add new entries above.
 };