Fix blits from multisampled renderbuffers to alpha:false WebGL back buffer.

gpu/GLES2/gl2extchromium.h

Index: gpu/GLES2/gl2extchromium.h
diff --git a/gpu/GLES2/gl2extchromium.h b/gpu/GLES2/gl2extchromium.h
index e38949b5757ec32233014a29090d457676255dfc..8c1f3df16cf2c70767066eb5e993236b90ad7a39 100644
--- a/gpu/GLES2/gl2extchromium.h
+++ b/gpu/GLES2/gl2extchromium.h
@@ -84,6 +84,14 @@ GL_APICALL GLuint GL_APIENTRY glCreateImageCHROMIUM(ClientBuffer buffer,
                                                     GLsizei height,
                                                     GLenum internalformat);
 GL_APICALL void GL_APIENTRY glDestroyImageCHROMIUM(GLuint image_id);
+GL_APICALL void GL_APIENTRY glBindTexImage2DCHROMIUM(GLenum target,
+                                                     GLint imageId);
+GL_APICALL void GL_APIENTRY
+glBindTexImage2DWithInternalformatCHROMIUM(GLenum target,
+                                           GLenum internalformat,
+                                           GLint imageId);
+GL_APICALL void GL_APIENTRY glReleaseTexImage2DCHROMIUM(GLenum target,
+                                                        GLint imageId);
 #endif
 typedef GLuint(GL_APIENTRYP PFNGLCREATEIMAGECHROMIUMPROC)(
     ClientBuffer buffer,
@@ -92,6 +100,14 @@ typedef GLuint(GL_APIENTRYP PFNGLCREATEIMAGECHROMIUMPROC)(
     GLenum internalformat);
 typedef void (
     GL_APIENTRYP PFNGLDESTROYIMAGECHROMIUMPROC)(GLuint image_id);
+typedef void(GL_APIENTRYP PFNGLBINDTEXIMAGE2DCHROMIUMPROC)(GLenum target,
+                                                           GLint imageId);
+typedef void(GL_APIENTRYP PFNGLBINDTEXIMAGE2DWITHINTERNALFORMATCHROMIUMPROC)(
+    GLenum target,
+    GLenum internalformat,
+    GLint imageId);
+typedef void(GL_APIENTRYP PFNGLRELEASETEXIMAGE2DCHROMIUMPROC)(GLenum target,
+                                                              GLint imageId);
 #endif  /* GL_CHROMIUM_image */
 
 #ifndef GL_RGB_YCRCB_420_CHROMIUM
@@ -169,21 +185,6 @@ typedef void (GL_APIENTRYP PFNGLREQUESTEXTENSIONCHROMIUMPROC) (
 #endif
 #endif  /* GL_CHROMIUM_get_error_query */
 
-/* GL_CHROMIUM_texture_from_image */
-#ifndef GL_CHROMIUM_texture_from_image
-#define GL_CHROMIUM_texture_from_image 1
-#ifdef GL_GLEXT_PROTOTYPES
-GL_APICALL void GL_APIENTRY glBindTexImage2DCHROMIUM(
-    GLenum target, GLint imageId);
-GL_APICALL void GL_APIENTRY glReleaseTexImage2DCHROMIUM(
-    GLenum target, GLint imageId);
-#endif
-typedef void (GL_APIENTRYP PFNGLBINDTEXIMAGE2DCHROMIUMPROC) (
-    GLenum target, GLint imageId);
-typedef void (GL_APIENTRYP PFNGLRELEASETEXIMAGE2DCHROMIUMPROC) (
-    GLenum target, GLint imageId);
-#endif  /* GL_CHROMIUM_texture_from_image */
-
 /* GL_CHROMIUM_post_sub_buffer */
 #ifndef GL_CHROMIUM_post_sub_buffer
 #define GL_CHROMIUM_post_sub_buffer 1