blink: Remove unused or rarely used methods from WebGraphicsContext3D

third_party/WebKit/public/platform/WebGraphicsContext3D.h

Index: third_party/WebKit/public/platform/WebGraphicsContext3D.h
diff --git a/third_party/WebKit/public/platform/WebGraphicsContext3D.h b/third_party/WebKit/public/platform/WebGraphicsContext3D.h
index 89ad941ddcb143cb256f57655f156a67f3411fa5..7d7b77e194594b89174a345632941190a4441297 100644
--- a/third_party/WebKit/public/platform/WebGraphicsContext3D.h
+++ b/third_party/WebKit/public/platform/WebGraphicsContext3D.h
@@ -141,30 +141,13 @@ public:
     // the ID number, the more recently the context has been flushed.
     virtual uint32_t lastFlushID() { return 0; }
 
-    // Resizes the region into which this WebGraphicsContext3D is drawing.
-    virtual void reshapeWithScaleFactor(int width, int height, float scaleFactor) { }
-
-    // GL_CHROMIUM_setVisibility - Changes the visibility of the backbuffer
-    virtual void setVisibilityCHROMIUM(bool visible) = 0;
-
     // GL_EXT_discard_framebuffer - makes specified attachments of currently bound framebuffer undefined.
     virtual void discardFramebufferEXT(WGC3Denum target, WGC3Dsizei numAttachments, const WGC3Denum* attachments) { }
 
-    // GL_CHROMIUM_discard_backbuffer - controls allocation/deallocation of the back buffer.
-    virtual void discardBackbufferCHROMIUM() { }
-    virtual void ensureBackbufferCHROMIUM() { }
-
     virtual WGC3Duint64 insertFenceSyncCHROMIUM() { return 0; }
     virtual bool genSyncTokenCHROMIUM(WGC3Duint64, WGC3Dbyte*) { return false; }
     virtual void waitSyncTokenCHROMIUM(const WGC3Dbyte*) {}
 
-    // Copies the contents of the off-screen render target used by the WebGL
-    // context to the corresponding texture used by the compositor.
-    virtual void prepareTexture() = 0;
-
-    // GL_CHROMIUM_post_sub_buffer - Copies part of the back buffer to the front buffer.
-    virtual void postSubBufferCHROMIUM(int x, int y, int width, int height) = 0;
-
     // Synthesizes an OpenGL error which will be returned from a
     // later call to getError. This is used to emulate OpenGL ES
     // 2.0 behavior on the desktop and to enforce additional error
@@ -175,12 +158,6 @@ public:
     // getError in the order they were added.
     virtual void synthesizeGLError(WGC3Denum) = 0;
 
-    // GL_CHROMIUM_map_sub
-    virtual void* mapBufferSubDataCHROMIUM(WGC3Denum target, WGC3Dintptr offset, WGC3Dsizeiptr size, WGC3Denum access) = 0;
-    virtual void unmapBufferSubDataCHROMIUM(const void*) = 0;
-    virtual void* mapTexSubImage2DCHROMIUM(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type, WGC3Denum access) = 0;
-    virtual void unmapTexSubImage2DCHROMIUM(const void*) = 0;
-
     // GL_CHROMIUM_request_extension
     virtual WebString getRequestableExtensionsCHROMIUM() = 0;
     virtual void requestExtensionCHROMIUM(const char*) = 0;
@@ -189,9 +166,6 @@ public:
     virtual void blitFramebufferCHROMIUM(WGC3Dint srcX0, WGC3Dint srcY0, WGC3Dint srcX1, WGC3Dint srcY1, WGC3Dint dstX0, WGC3Dint dstY0, WGC3Dint dstX1, WGC3Dint dstY1, WGC3Dbitfield mask, WGC3Denum filter) = 0;
     virtual void renderbufferStorageMultisampleCHROMIUM(WGC3Denum target, WGC3Dsizei samples, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height) = 0;
 
-    // GL_CHROMIUM_lose_context
-    virtual void loseContextCHROMIUM(WGC3Denum current, WGC3Denum other) { }
-
     // The entry points below map directly to the OpenGL ES 2.0 API.
     // See: http://www.khronos.org/registry/gles/
     // and: http://www.khronos.org/opengles/sdk/docs/man/
@@ -284,8 +258,6 @@ public:
 
     virtual void readPixels(WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type, void* pixels) = 0;
 
-    virtual void releaseShaderCompiler() = 0;
-
     virtual void renderbufferStorage(WGC3Denum target, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height) = 0;
     virtual void sampleCoverage(WGC3Dclampf value, WGC3Dboolean invert) = 0;
     virtual void scissor(WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height) = 0;
@@ -358,21 +330,12 @@ public:
 
     virtual void setContextLostCallback(WebGraphicsContextLostCallback* callback) { }
     virtual void setErrorMessageCallback(WebGraphicsErrorMessageCallback* callback) { }
-    // GL_ARB_robustness
-    //
-    // This entry point must provide slightly different semantics than
-    // the GL_ARB_robustness extension; specifically, the lost context
-    // state is sticky, rather than reported only once.
-    virtual WGC3Denum getGraphicsResetStatusARB() { return 0; /* GL_NO_ERROR */ }
 
     virtual WebString getTranslatedShaderSourceANGLE(WebGLId shader) = 0;
 
     // GL_CHROMIUM_screen_space_antialiasing
     virtual void applyScreenSpaceAntialiasingCHROMIUM() { }
 
-    // GL_CHROMIUM_iosurface
-    virtual void texImageIOSurface2DCHROMIUM(WGC3Denum target, WGC3Dint width, WGC3Dint height, WGC3Duint ioSurfaceId, WGC3Duint plane) { }
-
     // GL_EXT_texture_storage
     virtual void texStorage2DEXT(WGC3Denum target, WGC3Dint levels, WGC3Duint internalformat,
                                  WGC3Dint width, WGC3Dint height) { }
@@ -390,9 +353,6 @@ public:
     virtual void queryCounterEXT(WebGLId query, WGC3Denum target) {}
     virtual void getQueryObjectui64vEXT(WebGLId query, WGC3Denum pname, WGC3Duint64* params) {}
 
-    // GL_CHROMIUM_bind_uniform_location
-    virtual void bindUniformLocationCHROMIUM(WebGLId program, WGC3Dint location, const WGC3Dchar* uniform) { }
-
     // GL_CHROMIUM_copy_texture
     virtual void copyTextureCHROMIUM(WGC3Duint sourceId,
         WGC3Duint destId, WGC3Denum internalFormat, WGC3Denum destType,
@@ -402,10 +362,6 @@ public:
         WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height,
         WGC3Dboolean unpackFlipY, WGC3Dboolean unpackPremultiplyAlpha, WGC3Dboolean unpackUnmultiplyAlpha) { }
 
-    // GL_CHROMIUM_shallow_flush
-    virtual void shallowFlushCHROMIUM() { }
-    virtual void shallowFinishCHROMIUM() { }
-
     // GL_CHROMIUM_subscribe_uniform
     virtual void genValuebuffersCHROMIUM(WGC3Dsizei count, WebGLId* ids) { }
     virtual WebGLId createValuebufferCHROMIUM() { return 0; }
@@ -422,17 +378,10 @@ public:
     virtual void produceTextureCHROMIUM(WGC3Denum target, const WGC3Dbyte* mailbox) { }
     virtual void produceTextureDirectCHROMIUM(WebGLId texture, WGC3Denum target, const WGC3Dbyte* mailbox) { }
 
-    virtual void consumeTextureCHROMIUM(WGC3Denum target, const WGC3Dbyte* mailbox) { }
     virtual WebGLId createAndConsumeTextureCHROMIUM(WGC3Denum target, const WGC3Dbyte* mailbox) { return 0; }
 
     // GL_EXT_debug_marker
-    virtual void insertEventMarkerEXT(const WGC3Dchar* marker) { }
     virtual void pushGroupMarkerEXT(const WGC3Dchar* marker) { }
-    virtual void popGroupMarkerEXT(void) { }
-
-    // GL_CHROMIUM_trace_marker
-    virtual void traceBeginCHROMIUM(const WGC3Dchar* category, const WGC3Dchar* trace) { }
-    virtual void traceEndCHROMIUM() { }
 
     // GL_OES_vertex_array_object
     virtual WebGLId createVertexArrayOES() { return 0; }
@@ -444,15 +393,6 @@ public:
     virtual void bindTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint imageId) { }
     virtual void releaseTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint imageId) { }
 
-    // GL_CHROMIUM_pixel_transfer_buffer_object
-    virtual void* mapBufferCHROMIUM(WGC3Denum target, WGC3Denum access) { return nullptr; }
-    virtual WGC3Dboolean unmapBufferCHROMIUM(WGC3Denum target) { return false; }
-
-    // GL_CHROMIUM_async_pixel_transfers
-    virtual void asyncTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint level, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border, WGC3Denum format, WGC3Denum type, const void* pixels) { }
-    virtual void asyncTexSubImage2DCHROMIUM(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type, const void* pixels) { }
-    virtual void waitAsyncTexImage2DCHROMIUM(WGC3Denum) { }
-
     // GL_EXT_draw_buffers
     virtual void drawBuffersEXT(WGC3Dsizei n, const WGC3Denum* bufs) { }