DevTools: [Android] implement RenderWidgetHostViewAndroid::CopyFromCompositingSurface

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/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 253 matching lines @@
                               gfx::Rect(bitmap.size()),
                               static_cast<unsigned char*> (bitmap.pixels()));
 
   WebKit::WebGraphicsContext3D* context =
       ImageTransportFactoryAndroid::GetInstance()->GetContext3D();
   context->deleteTexture(texture);
 
   return true;
 }
 
+bool RenderWidgetHostViewAndroid::PopulateBitmapWithContents(

[no sievers, 2013/08/05 21:46:44]

Oh no... we are trying to deprecate any readbacks in here that are not
RWHV::CopyFromCopositingSurface().

+    const gfx::Size& size, SkBitmap* bitmap) {
+  if (!CompositorImpl::IsInitialized() ||
+      texture_id_in_layer_ == 0 ||
+      texture_size_in_layer_.IsEmpty())
+    return false;
+
+  GLHelper* helper = ImageTransportFactoryAndroid::GetInstance()->GetGLHelper();
+
+  WebKit::WebGLId texture = helper->CopyAndScaleTexture(
+      texture_id_in_layer_,
+      texture_size_in_layer_,
+      size,
+      true,
+      GLHelper::SCALER_QUALITY_FAST);
+  if (texture == 0)
+    return false;
+
+  helper->ReadbackTextureSync(texture,
+                              gfx::Rect(size),
+                              static_cast<unsigned char*> (bitmap->getPixels()));
+
+  WebKit::WebGraphicsContext3D* context =
+      ImageTransportFactoryAndroid::GetInstance()->GetContext3D();
+  context->deleteTexture(texture);
+
+  return true;
+}
+
 bool RenderWidgetHostViewAndroid::HasValidFrame() const {
   return texture_id_in_layer_ != 0 &&
       content_view_core_ &&
       !texture_size_in_layer_.IsEmpty();
 }
 
 gfx::NativeView RenderWidgetHostViewAndroid::GetNativeView() const {
   return content_view_core_->GetViewAndroid();
 }
 
@@ skipping 875 matching lines @@
 // RenderWidgetHostView, public:
 
 // static
 RenderWidgetHostView*
 RenderWidgetHostView::CreateViewForWidget(RenderWidgetHost* widget) {
   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(widget);
   return new RenderWidgetHostViewAndroid(rwhi, NULL);
 }
 
 } // namespace content