[telemetry] Add support for requesting memory dumps via DevTools API

tools/telemetry/telemetry/internal/browser/browser.py

Index: tools/telemetry/telemetry/internal/browser/browser.py
diff --git a/tools/telemetry/telemetry/internal/browser/browser.py b/tools/telemetry/telemetry/internal/browser/browser.py
index 3f0ae7057ec773942b6ef0936a35b8a63d088b26..4dbca9edd2f66a9df567a6a565e49b567fab169a 100644
--- a/tools/telemetry/telemetry/internal/browser/browser.py
+++ b/tools/telemetry/telemetry/internal/browser/browser.py
@@ -14,6 +14,7 @@ from telemetry.internal.backends import browser_backend
 from telemetry.internal.browser import browser_credentials
 from telemetry.internal.browser import extension_dict
 from telemetry.internal.browser import tab_list
+from telemetry.internal.browser import web_contents
 
 
 class Browser(app.App):
@@ -281,3 +282,10 @@ class Browser(app.App):
 
        See the documentation of the SystemInfo class for more details."""
     return self._browser_backend.GetSystemInfo()
+
+  @property
+  def supports_memory_dumping(self):
+    return self._browser_backend.supports_memory_dumping
+
+  def DumpMemory(self, timeout=web_contents.DEFAULT_WEB_CONTENTS_TIMEOUT):
+    return self._browser_backend.DumpMemory(timeout)