Support InputMethodManager#updateCursorAnchorInfo for Android 5.0

content/browser/android/content_view_core_impl.h

Index: content/browser/android/content_view_core_impl.h
diff --git a/content/browser/android/content_view_core_impl.h b/content/browser/android/content_view_core_impl.h
index aab7ecafbd0a15b6bac63a572ac2387791c065a1..99faddb5f9e26b44cd599ff17e895a99739317ab 100644
--- a/content/browser/android/content_view_core_impl.h
+++ b/content/browser/android/content_view_core_impl.h
@@ -28,6 +28,10 @@
 #include "ui/gfx/geometry/rect_f.h"
 #include "url/gurl.h"
 
+namespace cc {
+struct ViewportSelectionBound;
+}
+
 namespace ui {
 class WindowAndroid;
 }
@@ -305,6 +309,7 @@ class ContentViewCoreImpl : public ContentViewCore,
   void HideSelectPopupMenu();
 
   // All sizes and offsets are in CSS pixels as cached by the renderer.
+  // Selection bounds are in DIP coordinates.

[aelias_OOO_until_Jul13, 2016/02/10 08:23:41]

This comment may cause confusion because it makes selection bounds sound like in
a different coordinate space from the rest, when they're not.  So I'd prefer it
wasn't added.

DIP and CSS pixels are basically the same thing.  Even zoom-for-dsf mode will
not change that as I understand it, and there are no medium-term plans to change
Android to zoom-for-dsf new mode anyway.

[aelias_OOO_until_Jul13, 2016/02/24 03:16:39]

where CSS*mPageScaleFactor==DIP (and DIP*mDeviceScaleFactor==PHYSICAL)
Well, not exactly, I guess I forgot that terminology distinction (which probably
I wrote myself years ago).  Anyway, my main point is that I don't want us to add
a special comment referring to selection bounds when it's in the same space as
everything else.

   void UpdateFrameInfo(const gfx::Vector2dF& scroll_offset,
                        float page_scale_factor,
                        const gfx::Vector2dF& page_scale_factor_limits,
@@ -312,7 +317,8 @@ class ContentViewCoreImpl : public ContentViewCore,
                        const gfx::SizeF& viewport_size,
                        const gfx::Vector2dF& controls_offset,
                        const gfx::Vector2dF& content_offset,
-                       bool is_mobile_optimized_hint);
+                       bool is_mobile_optimized_hint,
+                       const cc::ViewportSelectionBound& selection_start);
 
   void ForceUpdateImeAdapter(long native_ime_adapter);
   void UpdateImeAdapter(long native_ime_adapter,