Revert 193798 "Revert r192949 "Disable shader disk cache by defa..."

Reverting seems to fix memory_test test locally on linux.

BUG=230085

> Revert r192949 "Disable shader disk cache by default."
> 
> This reverts commit r192949. The disable has been merged into
> M27 so re-enabling on trunk.
> 
> BUG=228989
> 
> Review URL: https://chromiumcodereview.appspot.com/13872012

TBR=dsinclair@chromium.org

Review URL: https://codereview.chromium.org/13924005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194503 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/login/chrome_restart_request.cc

@@ -76,7 +76,7 @@ std::string DeriveCommandLine(const GURL& start_url,
       ::switches::kDisableBrowserPluginCompositing,
       ::switches::kDisableEncryptedMedia,
       ::switches::kDisableForceCompositingMode,
-      ::switches::kDisableGpuShaderDiskCache,
+      ::switches::kEnableGpuShaderDiskCache,
       ::switches::kDisableGpuWatchdog,
       ::switches::kDisableLoginAnimations,
       ::switches::kDisableOobeAnimation,

content/browser/gpu/gpu_process_host.cc

@@ -717,8 +717,8 @@ void GpuProcessHost::EstablishGpuChannel(
     callback.Run(IPC::ChannelHandle(), GPUInfo());
   }
 
-  if (!CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kDisableGpuShaderDiskCache)) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableGpuShaderDiskCache)) {
     CreateChannelCache(client_id, gpu::kDefaultMaxProgramCacheMemoryBytes);
   }
 }

gpu/command_buffer/service/gpu_switches.cc

@@ -60,7 +60,7 @@ const char kGpuProgramCacheSizeKb[]         = "gpu-program-cache-size-kb";
 const char kTraceGL[]       = "trace-gl";
 
 // Disables the GPU shader on disk cache.
-const char kDisableGpuShaderDiskCache[]     = "disable-gpu-shader-disk-cache";
+const char kEnableGpuShaderDiskCache[]      = "enable-gpu-shader-disk-cache";
 
 const char* kGpuSwitches[] = {
   kCompileShaderAlwaysSucceeds,
@@ -79,7 +79,7 @@ const char* kGpuSwitches[] = {
   kGpuDriverBugWorkarounds,
   kGpuProgramCacheSizeKb,
   kTraceGL,
-  kDisableGpuShaderDiskCache,
+  kEnableGpuShaderDiskCache,
 };
 
 const int kNumGpuSwitches = arraysize(kGpuSwitches);

gpu/command_buffer/service/gpu_switches.h

@@ -27,7 +27,7 @@ GPU_EXPORT extern const char kForceSynchronousGLReadPixels[];
 GPU_EXPORT extern const char kGpuDriverBugWorkarounds[];
 GPU_EXPORT extern const char kGpuProgramCacheSizeKb[];
 GPU_EXPORT extern const char kTraceGL[];
-GPU_EXPORT extern const char kDisableGpuShaderDiskCache[];
+GPU_EXPORT extern const char kEnableGpuShaderDiskCache[];
 
 GPU_EXPORT extern const char* kGpuSwitches[];
 GPU_EXPORT extern const int kNumGpuSwitches;

gpu/command_buffer/service/memory_program_cache.cc

@@ -142,8 +142,8 @@ ProgramCache::ProgramLoadResult MemoryProgramCache::LoadLinkedProgram(
   shader_b->set_uniform_map(value->uniform_map_1);
 
   if (!shader_callback.is_null() &&
-      !CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableGpuShaderDiskCache)) {
+      CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableGpuShaderDiskCache)) {
     GpuProgramProto* proto = GpuProgramProto::default_instance().New();
     proto->set_sha(sha, kHashLength);
     proto->set_format(value->format);
@@ -212,8 +212,8 @@ void MemoryProgramCache::SaveLinkedProgram(
   }
 
   if (!shader_callback.is_null() &&
-      !CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableGpuShaderDiskCache)) {
+      CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableGpuShaderDiskCache)) {
     GpuProgramProto* proto = GpuProgramProto::default_instance().New();
     proto->set_sha(sha, kHashLength);
     proto->set_format(format);

gpu/command_buffer/service/memory_program_cache_unittest.cc

@@ -204,37 +204,6 @@ TEST_F(MemoryProgramCacheTest, CacheSave) {
       *vertex_shader_->deferred_compilation_source(),
       *fragment_shader_->deferred_compilation_source(),
       NULL));
-  EXPECT_EQ(1, shader_cache_count());
-}
-
-TEST_F(MemoryProgramCacheTest, LoadProgram) {
-  const GLenum kFormat = 1;
-  const int kProgramId = 10;
-  const int kBinaryLength = 20;
-  char test_binary[kBinaryLength];
-  for (int i = 0; i < kBinaryLength; ++i) {
-    test_binary[i] = i;
-  }
-  ProgramBinaryEmulator emulator(kBinaryLength, kFormat, test_binary);
-
-  SetExpectationsForSaveLinkedProgram(kProgramId, &emulator);
-  cache_->SaveLinkedProgram(kProgramId, vertex_shader_, fragment_shader_, NULL,
-                            base::Bind(&MemoryProgramCacheTest::ShaderCacheCb,
-                                       base::Unretained(this)));
-
-  EXPECT_EQ(ProgramCache::LINK_SUCCEEDED, cache_->GetLinkedProgramStatus(
-      *vertex_shader_->deferred_compilation_source(),
-      *fragment_shader_->deferred_compilation_source(),
-      NULL));
-  EXPECT_EQ(1, shader_cache_count());
-
-  cache_->Clear();
-
-  cache_->LoadProgram(shader_cache_shader());
-  EXPECT_EQ(ProgramCache::LINK_SUCCEEDED, cache_->GetLinkedProgramStatus(
-      *vertex_shader_->deferred_compilation_source(),
-      *fragment_shader_->deferred_compilation_source(),
-      NULL));
 }
 
 TEST_F(MemoryProgramCacheTest, CacheLoadMatchesSave) {
@@ -251,7 +220,6 @@ TEST_F(MemoryProgramCacheTest, CacheLoadMatchesSave) {
   cache_->SaveLinkedProgram(kProgramId, vertex_shader_, fragment_shader_, NULL,
                             base::Bind(&MemoryProgramCacheTest::ShaderCacheCb,
                                        base::Unretained(this)));
-  EXPECT_EQ(1, shader_cache_count());
 
   VariableMap vertex_attrib_map = vertex_shader_->attrib_map();
   VariableMap vertex_uniform_map = vertex_shader_->uniform_map();
@@ -297,7 +265,6 @@ TEST_F(MemoryProgramCacheTest, LoadProgramMatchesSave) {
   cache_->SaveLinkedProgram(kProgramId, vertex_shader_, fragment_shader_, NULL,
                             base::Bind(&MemoryProgramCacheTest::ShaderCacheCb,
                                        base::Unretained(this)));
-  EXPECT_EQ(1, shader_cache_count());
 
   VariableMap vertex_attrib_map = vertex_shader_->attrib_map();
   VariableMap vertex_uniform_map = vertex_shader_->uniform_map();
@@ -311,9 +278,6 @@ TEST_F(MemoryProgramCacheTest, LoadProgramMatchesSave) {
 
   SetExpectationsForLoadLinkedProgram(kProgramId, &emulator);
 
-  cache_->Clear();
-  cache_->LoadProgram(shader_cache_shader());
-
   EXPECT_EQ(ProgramCache::PROGRAM_LOAD_SUCCESS, cache_->LoadLinkedProgram(
       kProgramId,
       vertex_shader_,