Plumb composition character bounds for Android 5.0

content/renderer/render_widget.h

Index: content/renderer/render_widget.h
diff --git a/content/renderer/render_widget.h b/content/renderer/render_widget.h
index 6b17db72626472716d0e6bcb745d0e3d71482549..1ee18a45c6c14b65b7d9e98874b859a87588d92a 100644
--- a/content/renderer/render_widget.h
+++ b/content/renderer/render_widget.h
@@ -292,10 +292,11 @@ class CONTENT_EXPORT RenderWidget
   void UpdateTextInputState(ShowIme show_ime, ChangeSource change_source);
 #endif
 
-#if defined(OS_MACOSX) || defined(USE_AURA)
+#if defined(OS_MACOSX) || defined(USE_AURA) || defined(OS_ANDROID)
   // Checks if the composition range or composition character bounds have been
   // changed. If they are changed, the new value will be sent to the browser
-  // process.
+  // process. This method does nothing when the browser process is not able to
+  // handle composition range and composition character bounds.
   void UpdateCompositionInfo(bool should_update_range);
 #endif
 
@@ -471,7 +472,7 @@ class CONTENT_EXPORT RenderWidget
   virtual ui::TextInputType WebKitToUiTextInputType(
       blink::WebTextInputType type);
 
-#if defined(OS_MACOSX) || defined(USE_AURA)
+#if defined(OS_MACOSX) || defined(USE_AURA) || defined(OS_ANDROID)
   // Override point to obtain that the current composition character bounds.
   // In the case of surrogate pairs, the character is treated as two characters:
   // the bounds for first character is actual one, and the bounds for second