Remove static thread pointers from CC

cc/gl_renderer.cc

Index: cc/gl_renderer.cc
diff --git a/cc/gl_renderer.cc b/cc/gl_renderer.cc
index 361ced1b2b588d8eb0ef326140d164cfa57a9686..0849cf252ef3fe63f53fac1c3506da99251a4db1 100644
--- a/cc/gl_renderer.cc
+++ b/cc/gl_renderer.cc
@@ -64,9 +64,9 @@ bool needsIOSurfaceReadbackWorkaround()
 
 } // anonymous namespace
 
-scoped_ptr<GLRenderer> GLRenderer::create(RendererClient* client, ResourceProvider* resourceProvider)
+scoped_ptr<GLRenderer> GLRenderer::create(RendererClient* client, ResourceProvider* resourceProvider, bool hasImplThread)
 {
-    scoped_ptr<GLRenderer> renderer(make_scoped_ptr(new GLRenderer(client, resourceProvider)));
+    scoped_ptr<GLRenderer> renderer(make_scoped_ptr(new GLRenderer(client, resourceProvider, hasImplThread)));
     if (!renderer->initialize())
         return scoped_ptr<GLRenderer>();
 
@@ -74,8 +74,10 @@ scoped_ptr<GLRenderer> GLRenderer::create(RendererClient* client, ResourceProvid
 }
 
 GLRenderer::GLRenderer(RendererClient* client,
-                           ResourceProvider* resourceProvider)
+                           ResourceProvider* resourceProvider,
+                           bool hasImplThread)
     : DirectRenderer(client, resourceProvider)
+    , m_hasImplThread(hasImplThread)
     , m_offscreenFramebufferId(0)
     , m_sharedGeometryQuad(FloatRect(-0.5f, -0.5f, 1.0f, 1.0f))
     , m_context(resourceProvider->graphicsContext3D())
@@ -113,7 +115,7 @@ bool GLRenderer::initialize()
     m_capabilities.usingPartialSwap = Settings::partialSwapEnabled() && extensions.count("GL_CHROMIUM_post_sub_buffer");
 
     // Use the swapBuffers callback only with the threaded proxy.
-    if (Proxy::hasImplThread())
+    if (m_hasImplThread)
         m_capabilities.usingSwapCompleteCallback = extensions.count("GL_CHROMIUM_swapbuffers_complete_callback");
     if (m_capabilities.usingSwapCompleteCallback)
         m_context->setSwapBuffersCompleteCallbackCHROMIUM(this);
@@ -146,7 +148,6 @@ bool GLRenderer::initialize()
 
 GLRenderer::~GLRenderer()
 {
-    DCHECK(Proxy::isImplThread());
     m_context->setSwapBuffersCompleteCallbackCHROMIUM(0);
     m_context->setMemoryAllocationChangedCallbackCHROMIUM(0);
     m_context->setContextLostCallback(0);
@@ -334,29 +335,29 @@ void GLRenderer::drawDebugBorderQuad(const DrawingFrame& frame, const DebugBorde
     GLC(context(), context()->drawElements(GL_LINE_LOOP, 4, GL_UNSIGNED_SHORT, 6 * sizeof(unsigned short)));
 }
 
-static WebGraphicsContext3D* getFilterContext()
+static WebGraphicsContext3D* getFilterContext(bool hasImplThread)
 {
-    if (Proxy::hasImplThread())
+    if (hasImplThread)
         return WebSharedGraphicsContext3D::compositorThreadContext();
     else
         return WebSharedGraphicsContext3D::mainThreadContext();
 }
 
-static GrContext* getFilterGrContext()
+static GrContext* getFilterGrContext(bool hasImplThread)
 {
-    if (Proxy::hasImplThread())
+    if (hasImplThread)
         return WebSharedGraphicsContext3D::compositorThreadGrContext();
     else
         return WebSharedGraphicsContext3D::mainThreadGrContext();
 }
 
-static inline SkBitmap applyFilters(GLRenderer* renderer, const WebKit::WebFilterOperations& filters, ScopedTexture* sourceTexture)
+static inline SkBitmap applyFilters(GLRenderer* renderer, const WebKit::WebFilterOperations& filters, ScopedTexture* sourceTexture, bool hasImplThread)
 {
     if (filters.isEmpty())
         return SkBitmap();
 
-    WebGraphicsContext3D* filterContext = getFilterContext();
-    GrContext* filterGrContext = getFilterGrContext();
+    WebGraphicsContext3D* filterContext = getFilterContext(hasImplThread);
+    GrContext* filterGrContext = getFilterGrContext(hasImplThread);
 
     if (!filterContext || !filterGrContext)
         return SkBitmap();
@@ -368,13 +369,13 @@ static inline SkBitmap applyFilters(GLRenderer* renderer, const WebKit::WebFilte
     return source;
 }
 
-static SkBitmap applyImageFilter(GLRenderer* renderer, SkImageFilter* filter, ScopedTexture* sourceTexture)
+static SkBitmap applyImageFilter(GLRenderer* renderer, SkImageFilter* filter, ScopedTexture* sourceTexture, bool hasImplThread)
 {
     if (!filter)
         return SkBitmap();
 
-    WebGraphicsContext3D* context3d = getFilterContext();
-    GrContext* grContext = getFilterGrContext();
+    WebGraphicsContext3D* context3d = getFilterContext(hasImplThread);
+    GrContext* grContext = getFilterGrContext(hasImplThread);
 
     if (!context3d || !grContext)
         return SkBitmap();
@@ -459,7 +460,7 @@ scoped_ptr<ScopedTexture> GLRenderer::drawBackgroundFilters(DrawingFrame& frame,
     if (!getFramebufferTexture(deviceBackgroundTexture.get(), cc::IntRect(deviceRect)))
         return scoped_ptr<ScopedTexture>();
 
-    SkBitmap filteredDeviceBackground = applyFilters(this, filters, deviceBackgroundTexture.get());
+    SkBitmap filteredDeviceBackground = applyFilters(this, filters, deviceBackgroundTexture.get(), m_hasImplThread);
     if (!filteredDeviceBackground.getTexture())
         return scoped_ptr<ScopedTexture>();
 
@@ -514,9 +515,9 @@ void GLRenderer::drawRenderPassQuad(DrawingFrame& frame, const RenderPassDrawQua
     // Apply filters to the contents texture.
     SkBitmap filterBitmap;
     if (renderPass->filter()) {
-        filterBitmap = applyImageFilter(this, renderPass->filter(), contentsTexture);
+        filterBitmap = applyImageFilter(this, renderPass->filter(), contentsTexture, m_hasImplThread);
     } else {
-        filterBitmap = applyFilters(this, renderPass->filters(), contentsTexture);
+        filterBitmap = applyFilters(this, renderPass->filters(), contentsTexture, m_hasImplThread);
     }
     scoped_ptr<ResourceProvider::ScopedReadLockGL> contentsResourceLock;
     unsigned contentsTextureId = 0;
@@ -946,8 +947,6 @@ struct TexTransformTextureProgramBinding : TextureProgramBinding {
 
 void GLRenderer::drawTextureQuad(const DrawingFrame& frame, const TextureDrawQuad* quad)
 {
-    DCHECK(Proxy::isImplThread());
-
     TexTransformTextureProgramBinding binding;
     if (quad->flipped())
         binding.set(textureProgramFlip());
@@ -990,7 +989,6 @@ void GLRenderer::drawTextureQuad(const DrawingFrame& frame, const TextureDrawQua
 
 void GLRenderer::drawIOSurfaceQuad(const DrawingFrame& frame, const IOSurfaceDrawQuad* quad)
 {
-    DCHECK(Proxy::isImplThread());
     TexTransformTextureProgramBinding binding;
     binding.set(textureIOSurfaceProgram());
 
@@ -1132,19 +1130,6 @@ void GLRenderer::onSwapBuffersComplete()
 
 void GLRenderer::onMemoryAllocationChanged(WebGraphicsMemoryAllocation allocation)
 {
-    // FIXME: This is called on the main thread in single threaded mode, but we expect it on the impl thread.
-    if (!Proxy::hasImplThread()) {
-      DCHECK(Proxy::isMainThread());
-      DebugScopedSetImplThread impl;
-      onMemoryAllocationChangedOnImplThread(allocation);
-    } else {
-      DCHECK(Proxy::isImplThread());
-      onMemoryAllocationChangedOnImplThread(allocation);
-    }
-}
-
-void GLRenderer::onMemoryAllocationChangedOnImplThread(WebKit::WebGraphicsMemoryAllocation allocation)
-{
     m_discardFramebufferWhenNotVisible = !allocation.suggestHaveBackbuffer;
     // Just ignore the memory manager when it says to set the limit to zero
     // bytes. This will happen when the memory manager thinks that the renderer