gpu: Refactor GpuMemoryBuffer framework for multi-process support.

gpu/command_buffer/common/gles2_cmd_utils.cc

Index: gpu/command_buffer/common/gles2_cmd_utils.cc
diff --git a/gpu/command_buffer/common/gles2_cmd_utils.cc b/gpu/command_buffer/common/gles2_cmd_utils.cc
index 25eafcd8a267fdf55826ac44a5120e77822578b0..40444bb4ce3bb67228b534793d4bb1bed2dbd927 100644
--- a/gpu/command_buffer/common/gles2_cmd_utils.cc
+++ b/gpu/command_buffer/common/gles2_cmd_utils.cc
@@ -715,7 +715,28 @@ bool GLES2Util::ParseUniformName(
   return true;
 }
 
-ContextCreationAttribParser::ContextCreationAttribParser()
+namespace {
+
+// From <EGL/egl.h>.
+const int32 EGL_ALPHA_SIZE = 0x3021;
+const int32 EGL_BLUE_SIZE = 0x3022;
+const int32 EGL_GREEN_SIZE = 0x3023;
+const int32 EGL_RED_SIZE = 0x3024;
+const int32 EGL_DEPTH_SIZE = 0x3025;
+const int32 EGL_STENCIL_SIZE = 0x3026;
+const int32 EGL_SAMPLES = 0x3031;
+const int32 EGL_SAMPLE_BUFFERS = 0x3032;
+const int32 EGL_NONE = 0x3038;
+const int32 EGL_SWAP_BEHAVIOR = 0x3093;
+const int32 EGL_BUFFER_PRESERVED = 0x3094;
+
+// Chromium only.
+const int32 SHARE_RESOURCES           = 0x10000;
+const int32 BIND_GENERATES_RESOURCES  = 0x10001;
+
+}  // namespace
+
+ContextCreationAttribHelper::ContextCreationAttribHelper()
   : alpha_size_(-1),
     blue_size_(-1),
     green_size_(-1),
@@ -729,24 +750,49 @@ ContextCreationAttribParser::ContextCreationAttribParser()
     bind_generates_resource_(true) {
 }
 
-bool ContextCreationAttribParser::Parse(const std::vector<int32>& attribs) {
-  // From <EGL/egl.h>.
-  const int32 EGL_ALPHA_SIZE = 0x3021;
-  const int32 EGL_BLUE_SIZE = 0x3022;
-  const int32 EGL_GREEN_SIZE = 0x3023;
-  const int32 EGL_RED_SIZE = 0x3024;
-  const int32 EGL_DEPTH_SIZE = 0x3025;
-  const int32 EGL_STENCIL_SIZE = 0x3026;
-  const int32 EGL_SAMPLES = 0x3031;
-  const int32 EGL_SAMPLE_BUFFERS = 0x3032;
-  const int32 EGL_NONE = 0x3038;
-  const int32 EGL_SWAP_BEHAVIOR = 0x3093;
-  const int32 EGL_BUFFER_PRESERVED = 0x3094;
-
-  // Chromium only.
-  const int32 SHARE_RESOURCES           = 0x10000;
-  const int32 BIND_GENERATES_RESOURCES  = 0x10001;
+void ContextCreationAttribHelper::Serialize(std::vector<int32>* attribs) {
+  if (alpha_size_ != -1) {
+    attribs->push_back(EGL_ALPHA_SIZE);
+    attribs->push_back(alpha_size_);
+  }
+  if (blue_size_ != -1) {
+    attribs->push_back(EGL_BLUE_SIZE);
+    attribs->push_back(blue_size_);
+  }
+  if (green_size_ != -1) {
+    attribs->push_back(EGL_GREEN_SIZE);
+    attribs->push_back(green_size_);
+  }
+  if (red_size_ != -1) {
+    attribs->push_back(EGL_RED_SIZE);
+    attribs->push_back(red_size_);
+  }
+  if (depth_size_ != -1) {
+    attribs->push_back(EGL_DEPTH_SIZE);
+    attribs->push_back(depth_size_);
+  }
+  if (stencil_size_ != -1) {
+    attribs->push_back(EGL_STENCIL_SIZE);
+    attribs->push_back(stencil_size_);
+  }
+  if (samples_ != -1) {
+    attribs->push_back(EGL_SAMPLES);
+    attribs->push_back(samples_);
+  }
+  if (sample_buffers_ != -1) {
+    attribs->push_back(EGL_SAMPLE_BUFFERS);
+    attribs->push_back(sample_buffers_);
+  }
+  attribs->push_back(EGL_SWAP_BEHAVIOR);
+  attribs->push_back(buffer_preserved_);
+  attribs->push_back(SHARE_RESOURCES);
+  attribs->push_back(share_resources_ ? 1 : 0);
+  attribs->push_back(BIND_GENERATES_RESOURCES);
+  attribs->push_back(bind_generates_resource_ ? 1 : 0);
+  attribs->push_back(EGL_NONE);
+}
 
+bool ContextCreationAttribHelper::Parse(const std::vector<int32>& attribs) {
   for (size_t i = 0; i < attribs.size(); i += 2) {
     const int32 attrib = attribs[i];
     if (i + 1 >= attribs.size()) {