Change glimage to accept a type.

gpu/GLES2/gl2extchromium.h

Index: gpu/GLES2/gl2extchromium.h
diff --git a/gpu/GLES2/gl2extchromium.h b/gpu/GLES2/gl2extchromium.h
index 0bdf7174f17661920fbaec915204612fda881a81..d4c67cf1747736dc37687b9fd3deccf9723dd8f4 100644
--- a/gpu/GLES2/gl2extchromium.h
+++ b/gpu/GLES2/gl2extchromium.h
@@ -106,17 +106,25 @@ typedef GLboolean (GL_APIENTRY PFNGLUNMAPBUFFERCHROMIUM) (GLuint target);
 #define GL_READ_WRITE 0x88BA
 #endif
 
+#ifndef GL_SCANOUT
+#define GL_SCANOUT 0x88BB
+#endif
+
 #ifdef GL_GLEXT_PROTOTYPES
-GL_APICALL GLuint GL_APIENTRY glCreateImageCHROMIUM(
-    GLsizei width, GLsizei height, GLenum internalformat);
+GL_APICALL GLuint GL_APIENTRY glCreateImageCHROMIUM(GLsizei width,
+                                                    GLsizei height,
+                                                    GLenum internalformat,
+                                                    GLenum usage);
 GL_APICALL void GL_APIENTRY glDestroyImageCHROMIUM(GLuint image_id);
 GL_APICALL void GL_APIENTRY glGetImageParameterivCHROMIUM(
     GLuint image_id, GLenum pname, GLint* params);
-GL_APICALL void* GL_APIENTRY glMapImageCHROMIUM(GLuint image_id, GLenum access);
+GL_APICALL void* GL_APIENTRY glMapImageCHROMIUM(GLuint image_id);
 GL_APICALL void GL_APIENTRY glUnmapImageCHROMIUM(GLuint image_id);
 #endif
-typedef GLuint (GL_APIENTRYP PFNGLCREATEIMAGECHROMIUMPROC) (
-    GLsizei width, GLsizei height, GLenum internalformat);
+typedef GLuint(GL_APIENTRYP PFNGLCREATEIMAGECHROMIUMPROC)(
+    GLsizei width,
+    GLsizei heiBht,
+    GLenum internalformat);
 typedef void (
     GL_APIENTRYP PFNGLDESTROYIMAGECHROMIUMPROC) (GLuint image_id);
 typedef void (