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

content/browser/renderer_host/render_widget_host_view_android.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/android/build_info.h"
 #include "base/basictypes.h"
@@ skipping 598 matching lines @@
   while (locks_on_frame_count_ > 0) {
     UnlockCompositingSurface();
   }
   RunAckCallbacks(cc::SurfaceDrawStatus::DRAW_SKIPPED);
 }
 
 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();
 
   return content_view_core_->GetPhysicalBackingSize();
 }
 
 bool RenderWidgetHostViewAndroid::DoTopControlsShrinkBlinkSize() const {
   if (!content_view_core_)
     return false;
@@ skipping 1380 matching lines @@
   results->orientationAngle = display.RotationAsDegree();
   results->orientationType =
       RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 }  // namespace content