ui: Use single buffer SurfaceTexture mode for native GpuMemoryBuffers on Android.

content/browser/gpu/browser_gpu_memory_buffer_manager.cc

Index: content/browser/gpu/browser_gpu_memory_buffer_manager.cc
diff --git a/content/browser/gpu/browser_gpu_memory_buffer_manager.cc b/content/browser/gpu/browser_gpu_memory_buffer_manager.cc
index b4b474e4d484d111461d3725380902b76ed455c1..bc0d534dfa9645ca59b6eec954deb9ca33c00564 100644
--- a/content/browser/gpu/browser_gpu_memory_buffer_manager.cc
+++ b/content/browser/gpu/browser_gpu_memory_buffer_manager.cc
@@ -29,6 +29,7 @@
 
 #if defined(OS_ANDROID)
 #include "content/common/gpu/gpu_memory_buffer_factory_surface_texture.h"
+#include "ui/gl/android/surface_texture.h"
 #endif
 
 #if defined(USE_OZONE)
@@ -216,6 +217,13 @@ bool BrowserGpuMemoryBufferManager::IsNativeGpuMemoryBuffersEnabled() {
     return false;
   }
 
+#if defined(OS_ANDROID)
+  // Single buffer SurfaceTexture mode is required for native buffers on
+  // Android.
+  if (!gfx::SurfaceTexture::IsSingleBufferModeSupported())
+    return false;
+#endif
+
 #if defined(OS_MACOSX)
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableNativeGpuMemoryBuffers);
@@ -237,16 +245,17 @@ uint32 BrowserGpuMemoryBufferManager::GetImageTextureTarget(
   }
 
   switch (GpuMemoryBufferFactory::GetNativeType()) {
-    case gfx::SURFACE_TEXTURE_BUFFER:
     case gfx::OZONE_NATIVE_PIXMAP:
-      // GPU memory buffers that are shared with the GL using EGLImages
+      // GPU memory buffers that are bound to GL textures using EGLImages
       // require TEXTURE_EXTERNAL_OES.
       return GL_TEXTURE_EXTERNAL_OES;
     case gfx::IO_SURFACE_BUFFER:
       // IOSurface backed images require GL_TEXTURE_RECTANGLE_ARB.
       return GL_TEXTURE_RECTANGLE_ARB;
-    case gfx::SHARED_MEMORY_BUFFER:
+    case gfx::SURFACE_TEXTURE_BUFFER:
+      // GPU memory buffers that require a copy expects GL_TEXTURE_2D as target.
       return GL_TEXTURE_2D;
+    case gfx::SHARED_MEMORY_BUFFER:
     case gfx::EMPTY_BUFFER:
       NOTREACHED();
       return GL_TEXTURE_2D;