Add a flag to specify the amount of total GPU memory available.

gpu/command_buffer/service/gpu_switches.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/gpu_switches.h"
 #include "base/basictypes.h"
 
 namespace switches {
 
 // Turn on Calling GL Error after every command.
@@ skipping 19 matching lines @@
 const char kDisableGpuProgramCache[]        = "disable-gpu-program-cache";
 
 // Enforce GL minimums.
 const char kEnforceGLMinimums[]             = "enforce-gl-minimums";
 
 // Force the use of a workaround for graphics hangs seen on certain
 // Mac OS systems. Enabled by default (and can't be disabled) on known
 // affected systems.
 const char kForceGLFinishWorkaround[]       = "force-glfinish-workaround";
 
+// Sets the total amount of memory that may be allocated for GPU resources
+const char kForceGpuMemAvailableMb[]        = "force-gpu-mem-available-mb";
+
 // Sets the maximum size of the in-memory gpu program cache, in kb
 const char kGpuProgramCacheSizeKb[]         = "gpu-program-cache-size-kb";
 
 const char kTraceGL[]       = "trace-gl";
 
 const char* kGpuSwitches[] = {
   kCompileShaderAlwaysSucceeds,
   kDisableGLErrorLimit,
   kDisableGLSLTranslator,
   kDisableGpuDriverBugWorkarounds,
   kEnableGPUCommandLogging,
   kEnableGPUDebugging,
   kDisableGpuProgramCache,
   kEnforceGLMinimums,
   kForceGLFinishWorkaround,
+  kForceGpuMemAvailableMb,
   kGpuProgramCacheSizeKb,
   kTraceGL,
 };
 
 const int kNumGpuSwitches = arraysize(kGpuSwitches);
 
 }  // namespace switches