Establish src/components/ directory.

components/README

Index: components/README
diff --git a/components/README b/components/README
new file mode 100644
index 0000000000000000000000000000000000000000..09640a2699ace8580c0fec158d7e2faa26b10585
--- /dev/null
+++ b/components/README
@@ -0,0 +1,30 @@
+This directory is for components that have the Content Module as the
+uppermost layer they depend on.  They may depend only on the Content
+API (content/public) and on lower layers (e.g. base/, net/, ipc/
+etc.).
+
+Components that have bits of code that need to live in different
+processes (e.g. some code in the browser process, some in the renderer
+process, etc.) should separate the code into different subdirectories.
+Hence for a component named 'foo' you might end up with a structure
+like the following:
+
+components/foo          - DEPS, OWNERS, foo.gypi
+components/foo/browser  - code that needs the browser process
+components/foo/common   - for e.g. IPC constants and such
+components/foo/renderer - code that needs renderer process
+
+These subdirectories should have DEPS files with the relevant
+restrictions in place, i.e. only components/*/browser should
+be allowed to #include from content/public/browser.
+
+Note that there may also be an 'android' subdir, with a Java source
+code structure underneath it where the package name is
+org.chromium.components.foo, and with subdirs after 'foo'
+to illustrate process, e.g. 'browser' or 'renderer':
+
+components/foo/android/OWNERS, DEPS
+components/foo/android/java/src/org/chromium/components/foo/browser/
+components/foo/android/javatests/src/org/chromium/components/foo/browser/
+
+Code in this directory should be placed in the components:: namespace.