Remove unused entry point rateLimitOffscreenContextCHROMIUM from WebGraphicsContext3D

BUG=531659

Review URL: https://codereview.chromium.org/1352653002

git-svn-id: svn://svn.chromium.org/blink/trunk/public@202585 bbb929c8-8fbe-4397-9dbb-9b2b20218538
diff --git a/platform/WebExternalTextureLayer.h b/platform/WebExternalTextureLayer.h
index e666afd..e4fd62e 100644
--- a/platform/WebExternalTextureLayer.h
+++ b/platform/WebExternalTextureLayer.h
@@ -57,10 +57,6 @@
     // at draw time. Defaults to false.
     virtual void setBlendBackgroundColor(bool) = 0;
 
-    // Sets whether this context should be rate limited by the compositor. Rate limiting works by blocking
-    // invalidate() and invalidateRect() calls if the compositor is too many frames behind.
-    virtual void setRateLimitContext(bool) = 0;
-
     // Sets whether this texture should use nearest neighbor interpolation as
     // opposed to bilinear. Defaults to false.
     virtual void setNearestNeighbor(bool) = 0;
diff --git a/platform/WebGraphicsContext3D.h b/platform/WebGraphicsContext3D.h
index 21fc858..7fb30ca 100644
--- a/platform/WebGraphicsContext3D.h
+++ b/platform/WebGraphicsContext3D.h
@@ -195,9 +195,6 @@
     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_rate_limit_offscreen_context
-    virtual void rateLimitOffscreenContextCHROMIUM() { }
-
     // GL_CHROMIUM_lose_context
     virtual void loseContextCHROMIUM(WGC3Denum current, WGC3Denum other) { }