gpu: Use shader cache on ES3

content/common/gpu/gpu_channel_manager.cc

Index: content/common/gpu/gpu_channel_manager.cc
diff --git a/content/common/gpu/gpu_channel_manager.cc b/content/common/gpu/gpu_channel_manager.cc
index f0e40e3309a5e174263ff94ed1e4adcca3bd1835..c8992dfdc9503511b0cba6eea34f3be7b3950bf8 100644
--- a/content/common/gpu/gpu_channel_manager.cc
+++ b/content/common/gpu/gpu_channel_manager.cc
@@ -23,6 +23,7 @@
 #include "gpu/command_buffer/service/sync_point_manager.h"
 #include "ipc/message_filter.h"
 #include "ui/gl/gl_bindings.h"
+#include "ui/gl/gl_gl_api_implementation.h"
 #include "ui/gl/gl_share_group.h"
 #if defined(USE_OZONE)
 #include "ui/ozone/public/gpu_platform_support.h"
@@ -68,7 +69,8 @@ GpuChannelManager::~GpuChannelManager() {
 gpu::gles2::ProgramCache* GpuChannelManager::program_cache() {
   if (!program_cache_.get() &&
       (gfx::g_driver_gl.ext.b_GL_ARB_get_program_binary ||
-       gfx::g_driver_gl.ext.b_GL_OES_get_program_binary) &&
+       gfx::g_driver_gl.ext.b_GL_OES_get_program_binary ||
+       gfx::GetGLVersionInfo()->is_es3) &&

[Zhenyao Mo, 2015/07/17 23:34:04]

I feel somehow this decision should be made in command buffer and propagate
here, but let's land this for now.

[no sievers, 2015/07/17 23:39:10]

Yes. I think it just exists this way using the static checks because we don't
have a context, or necessarily even a decoder (and which one should we look
at?). And we want to init the cache early so that it can receive the shaders
from the browser from disk.

       !base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableGpuProgramCache)) {
     program_cache_.reset(new gpu::gles2::MemoryProgramCache());