GPU: Reduce MakeCurrent calls to fix Orange San Diego

gpu/command_buffer/service/feature_info.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 "gpu/command_buffer/service/feature_info.h"
 
 #include <set>
 
 #include "base/command_line.h"
 #include "base/string_util.h"
@@ skipping 212 matching lines @@
       workarounds_.use_current_program_after_successful_link = true;
     }
     if (is_qualcomm) {
       workarounds_.restore_scissor_on_fbo_change = true;
       workarounds_.flush_on_context_switch = true;
       workarounds_.delete_instead_of_resize_fbo = true;
     }
     if (is_vivante) {
       workarounds_.unbind_fbo_on_context_switch = true;
     }
+    if (is_imagination) {

[greggman, 2013/05/03 18:28:09]

I'd prefer to only set the switch once (merge this if and the one above) but up
to you

+      workarounds_.unbind_fbo_on_context_switch = true;
+    }
 #if defined(OS_MACOSX)
     workarounds_.needs_offscreen_buffer_workaround = is_nvidia;
     workarounds_.needs_glsl_built_in_function_emulation = is_amd;
     if ((is_amd || is_intel) &&
         gfx::GetGLImplementation() == gfx::kGLImplementationDesktopGL) {
       workarounds_.reverse_point_sprite_coord_origin = true;
     }
     if (is_intel) {
       workarounds_.max_texture_size = 4096;
       workarounds_.max_cube_map_texture_size = 1024;
@@ skipping 478 matching lines @@
   if (extensions_.find(str) == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu