[cros] Initial WebRTC-enabled implementation of user image picker on OOBE.

chrome/browser/ui/webui/web_ui_util.cc

Index: chrome/browser/ui/webui/web_ui_util.cc
diff --git a/chrome/browser/ui/webui/web_ui_util.cc b/chrome/browser/ui/webui/web_ui_util.cc
index 160ba0affe917651847c838cf8d3687689d815d8..81456080658352f08abdaba6b3d870a5f0d4ad9a 100644
--- a/chrome/browser/ui/webui/web_ui_util.cc
+++ b/chrome/browser/ui/webui/web_ui_util.cc
@@ -11,6 +11,8 @@
 #include "base/memory/ref_counted_memory.h"
 #include "base/values.h"
 #include "chrome/browser/disposition_utils.h"
+#include "googleurl/src/gurl.h"
+#include "net/base/data_url.h"
 #include "ui/base/layout.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/codec/png_codec.h"
@@ -46,6 +48,26 @@ std::string GetImageDataUrlFromResource(int res) {
   return str_url;
 }
 
+gfx::ImageSkia GetImageFromDataUrl(const std::string& data_url) {
+  std::string mime_type, charset, raw_data;
+  if (!net::DataURL::Parse(GURL(data_url), &mime_type, &charset, &raw_data)) {
+    LOG(ERROR) << "Invalid data URL: " << data_url;
+    return gfx::ImageSkia();
+  }
+  if (mime_type != "image/png") {
+    LOG(WARNING) << "Data URL MIME type not supported: " << mime_type;
+    return gfx::ImageSkia();
+  }
+  SkBitmap image;
+  if (!gfx::PNGCodec::Decode(
+          reinterpret_cast<const unsigned char*>(raw_data.data()),
+          raw_data.size(), &image)) {
+    LOG(ERROR) << "Invalid image in data URL: " << data_url;
+    return gfx::ImageSkia();
+  }
+  return gfx::ImageSkia(image);
+}
+
 WindowOpenDisposition GetDispositionFromClick(const ListValue* args,
                                               int start_index) {
   double button = 0.0;