Add the ability to clear the shader disk cache.

content/browser/gpu/gpu_process_host.cc

Index: content/browser/gpu/gpu_process_host.cc
diff --git a/content/browser/gpu/gpu_process_host.cc b/content/browser/gpu/gpu_process_host.cc
index c832624c60e8001bd71ae951614eeca654759ba8..1a8af3929429026f141c5ada248f6b1d206e2d24 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -20,7 +20,7 @@
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_process_host_ui_shim.h"
 #include "content/browser/gpu/gpu_surface_tracker.h"
-#include "content/browser/gpu/shader_disk_cache.h"
+#include "content/browser/gpu/shader_disk_cache_impl.h"
 #include "content/browser/renderer_host/render_widget_helper.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/child_process_host_impl.h"
@@ -1270,7 +1270,7 @@ void GpuProcessHost::CreateChannelCache(int32 client_id, size_t cache_size) {
   TRACE_EVENT0("gpu", "GpuProcessHost::CreateChannelCache");
 
   scoped_refptr<ShaderDiskCache> cache =
-      ShaderCacheFactory::GetInstance()->Get(client_id);
+      ShaderCacheFactoryImpl::GetInstance()->Get(client_id);
   if (!cache)
     return;