Tune helper context buffer sizes

content/browser/renderer_host/image_transport_factory_android.cc

Index: content/browser/renderer_host/image_transport_factory_android.cc
diff --git a/content/browser/renderer_host/image_transport_factory_android.cc b/content/browser/renderer_host/image_transport_factory_android.cc
index 135e188cf3caccd3122143c03e1e93a6924be932..5cfdbcf2e9832b77265c5aeffed0951c511b96dc 100644
--- a/content/browser/renderer_host/image_transport_factory_android.cc
+++ b/content/browser/renderer_host/image_transport_factory_android.cc
@@ -13,6 +13,7 @@
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "third_party/khronos/GLES2/gl2.h"
+#include "ui/gfx/android/device_display_info.h"
 #include "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
 namespace content {
@@ -100,10 +101,22 @@ CmdBufferImageTransportFactory::CmdBufferImageTransportFactory() {
                                                            url,
                                                            factory,
                                                            swap_client));
-  context_->InitializeWithDefaultBufferSizes(
+  static const size_t kBytesPerPixel = 4;
+  gfx::DeviceDisplayInfo display_info;
+  size_t full_screen_texture_size_in_bytes =
+      display_info.GetDisplayHeight() *
+      display_info.GetDisplayWidth() *
+      kBytesPerPixel;
+  context_->Initialize(
       attrs,
       false,
-      CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE);
+      CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE,
+      64 * 1024,  // command buffer size
+      std::min(full_screen_texture_size_in_bytes,
+               kDefaultStartTransferBufferSize),
+      kDefaultMinTransferBufferSize,
+      std::min(3 * full_screen_texture_size_in_bytes,
+               kDefaultMaxTransferBufferSize));
 
   if (context_->makeContextCurrent())
     context_->pushGroupMarkerEXT(