Resize only the virtual viewport when the OSK triggers a resize.

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index c182e2982a386ead45fdc64039a74409dc498795..9495d102daef1789eae4ac18eec9717f89211ef0 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -616,9 +616,20 @@ gfx::Rect RenderWidgetHostViewAndroid::GetViewBounds() const {
   if (!content_view_core_)
     return gfx::Rect(default_size_);
 
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableOSKOverscroll))
+    return gfx::Rect(content_view_core_->GetViewSizeWithoutOSK());

[ymalik, 2015/10/08 19:39:02]

@jdduke

GetViewBounds has a bunch of callers. Having this flag on will always return the
size of the layout viewport. This seems reasonable to me, but are there any
tests around this for android that I can run locally?

Also, are there any android try bots that I can run locally to ensure nothing
breaks?

+
   return gfx::Rect(content_view_core_->GetViewSize());
 }
 
+gfx::Size RenderWidgetHostViewAndroid::GetVisibleViewportSize() const {
+  if (!content_view_core_)
+    return gfx::Rect(default_size_).size();
+
+  return gfx::Rect(content_view_core_->GetViewSize()).size();
+}
+
 gfx::Size RenderWidgetHostViewAndroid::GetPhysicalBackingSize() const {
   if (!content_view_core_)
     return gfx::Size();