Revert "Revert 113479 - Revert "Revert 113250 - Add CommandBuffer::SetGetBuffer""

gpu/command_buffer/service/cmd_parser.cc

Index: gpu/command_buffer/service/cmd_parser.cc
diff --git a/gpu/command_buffer/service/cmd_parser.cc b/gpu/command_buffer/service/cmd_parser.cc
index fba06e6a20b1d4b2f17a1ca432aad18cf74bbed2..b5383afdf8693c112a1a1a35fad8656db0e2a3b0 100644
--- a/gpu/command_buffer/service/cmd_parser.cc
+++ b/gpu/command_buffer/service/cmd_parser.cc
@@ -10,23 +10,29 @@
 
 namespace gpu {
 
-CommandParser::CommandParser(void *shm_address,
-                             size_t shm_size,
-                             ptrdiff_t offset,
-                             size_t size,
-                             CommandBufferOffset start_get,
-                             AsyncAPIInterface *handler)
-    : get_(start_get),
-      put_(start_get),
+CommandParser::CommandParser(AsyncAPIInterface* handler)
+    : get_(0),
+      put_(0),
+      buffer_(NULL),
+      entry_count_(0),
       handler_(handler) {
+}
+
+void CommandParser::SetBuffer(
+    void* shm_address,
+    size_t shm_size,
+    ptrdiff_t offset,
+    size_t size) {
   // check proper alignments.
   DCHECK_EQ(0, (reinterpret_cast<intptr_t>(shm_address)) % 4);
   DCHECK_EQ(0, offset % 4);
   DCHECK_EQ(0u, size % 4);
   // check that the command buffer fits into the memory buffer.
   DCHECK_GE(shm_size, offset + size);
-  char * buffer_begin = static_cast<char *>(shm_address) + offset;
-  buffer_ = reinterpret_cast<CommandBufferEntry *>(buffer_begin);
+  get_ = 0;
+  put_ = 0;
+  char* buffer_begin = static_cast<char*>(shm_address) + offset;
+  buffer_ = reinterpret_cast<CommandBufferEntry*>(buffer_begin);
   entry_count_ = size / 4;
 }