GPU client side changes for GpuMemoryBuffers

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 6121a58da44ff4784a8c609b3c3e305337fbc57d..9f56657f4276562b89967d78bf0a6fda6fcacaac 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -705,6 +705,8 @@ class GLES2DecoderImpl : public GLES2Decoder {
   void DeleteQueriesEXTHelper(GLsizei n, const GLuint* client_ids);
   bool GenVertexArraysOESHelper(GLsizei n, const GLuint* client_ids);
   void DeleteVertexArraysOESHelper(GLsizei n, const GLuint* client_ids);
+  bool GenImageBuffersHelper(GLsizei n, const GLuint* client_ids);
+  void DeleteImageBuffersHelper(GLsizei n, const GLuint* client_ids);
 
   // Workarounds
   void OnFboChanged() const;
@@ -2697,6 +2699,18 @@ bool GLES2DecoderImpl::GenTexturesHelper(GLsizei n, const GLuint* client_ids) {
   return true;
 }
 
+bool GLES2DecoderImpl::GenImageBuffersHelper(GLsizei n,
+                                             const GLuint* client_ids) {
+  for (GLsizei ii = 0; ii < n; ++ii) {
+    if (image_manager()->LookupImage(client_ids[ii])) {
+      return false;
+    }
+  }
+
+  // Image already inserted into the ImageManager within GpuMemoryBufferFactory.
+  return true;
+}
+
 void GLES2DecoderImpl::DeleteBuffersHelper(
     GLsizei n, const GLuint* client_ids) {
   for (GLsizei ii = 0; ii < n; ++ii) {
@@ -2815,6 +2829,13 @@ void GLES2DecoderImpl::DeleteTexturesHelper(
   }
 }
 
+void GLES2DecoderImpl::DeleteImageBuffersHelper(
+    GLsizei n, const GLuint* client_ids) {
+  for (GLsizei ii = 0; ii < n; ++ii) {
+    image_manager()->RemoveImage(client_ids[ii]);
+  }
+}
+
 // }  // anonymous namespace
 
 bool GLES2DecoderImpl::MakeCurrent() {